These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
The president said this had nothing to do with the Cold War, the Arizona Republican said on CBSâs âFace The Nation.â In the eyes of Vladimir Putin, it does. He wants to restore the Russian empire.â. But Sen. Dick Durbin, D-Illinois, said that dealing with Putin is tough, especially given his background.